Motorized switch automatically senses the voltage and provides optimal, efficient charging of up to two independent battery banks allowing them to be combined or isolated based on the presence of a charging source; plus, remote activation of emergency parallel connection of the battery banks. Unit is ignition protected, provides On/Off operation and may be recessed or surface mounted. Can be remotely controlled using the Remote System Wireless Kit (Model 14152276), which provides remote activation of the circuits from up to 250 feet away.